Semtech Rolls Out SX8725 Single Channel Data Acquisition Device

Semtech Corp. (Nasdaq:SMTC), a leading supplier of analog and mixed-signal semiconductors, announced the SX8725, a single-channel member of the company’s award-winning data acquisition product platform. The SX8725 features one differential input but delivers very high precision through its ZoomingADC(TM) functionality. ZoomingADC is the combination of a full 16-bit ADC and a powerful preamplifier that allows the device to “zoom in” (with a programmable gain from 0.1 to 1000) on a small portion of the analog signal. The SX8725 can lower the cost of implementing portable sensing systems by allowing manufacturers to use lower-cost sensors without sacrificing accuracy. It advantageously replaces a slower and more expensive 24 bits ADC.

The SX8725 saves designers more than 50% of the cost of an ADC by obviating the need for a 24-bit device. With the right combination of the signal chain elements integrated, the SX8725 saves on preamps and the extra premium for extra bits. The SX8725 generates this accuracy in the smallest package for this class of device. Sensor manufacturers can thus add value to their offering by providing a digital output from the sensor enclosure.

The SX8725 converts analog sensor data into a digital signal for processing and can be used with a wide array of pressure sensing, chemical sensing, load cells or temperature monitoring sensors. The SX8725 operates at voltages between 2.4V and 5.5V making it compatible with most portable devices. Its current requirement is low enough to be integrated in loop-powered 4-20mA systems.

“The SX8725 is a great value for smart-sensor manufacturers because it is a highly integrated part that reduces cost, and, with the ZoomingADC, allows OEMs to use lower cost sensors without sacrificing accuracy,” said Michel Chevroulet, Sensing Product Group Manager for Semtech’s Wireless and Sensing Products Business Unit. “The part helps Semtech to expand its leadership in industrial sensing and data acquisition markets into medical and consumer sensing as well.”

The SX8725 features a single differential input with two digital I/Os, and is part of a complete platform of ultra small data acquisition devices from Semtech, including the SX8723, which has two differential inputs or four single-ended inputs and two digital I/Os, and the SX8724, which has three differential inputs or six single-ended inputs and four parallel I/Os. All three products have I2C bus interface and an embedded voltage reference.

The SX8725 comes in a 4×4 mm MLPD12 leadless 12-pin package that is RoHS and WEEE compliant.

Key Features of the SX8725

  • ZoomingADC 16-bit ADC + 10-bits preamplifier with a programmable 0.1x to 1000x gain in 10% steps
  • Sensor offset compensation up to 15 times full scale of input signal
  • Two single-ended or one differential analog inputs
  • RC oscillator
  • Two general purpose parallel digital input/output lines
  • Sleep and power saving modes
  • I2C serial connection for MCU
  • Interfaces directly with most Wheatstone bridge sensors

Pricing and Availability
The SX8725 (order code: SX8725E083TRT) is available immediately in production quantities and is priced at $1.57 each in 10,000-piece lots. Semtech offers comprehensive design assistance, including field- and factory-based support. Data sheets, volume pricing, and delivery quotes, as well as evaluation kits and samples, are available by contacting

About Semtech
Semtech Corporation is a leading supplier of high-quality analog and mixed-signal semiconductor products. The company is dedicated to providing customers with proprietary solutions and breakthrough technology in power management, protection, test & measurement, advanced communications and wireless connectivity products. Publicly traded since 1967, Semtech is listed on the NASDAQ National Market under the symbol SMTC. For more information, contact Semtech Corp. at 200 Flynn Road, Camarillo, CA 93012-8790; phone 805-498-2111; email to

Semtech, the Semtech logo, and ZoomingADC are marks of Semtech Corporation.